Is this natural expression?

It is ungrammatical and unclear in meaning.

GPYIt is ungrammatical and unclear in meaning.

Then how do I fix it?

Carter Lee GPYIt is ungrammatical and unclear in meaning.Then how do I fix it?

We can't fix it because we don't know what you are trying to say.

Carter LeeThese all tasks are attracting to me"

I think this is what you mean, Carter Lee:

All of these tasks are attractive to me. ( = I am interested in doing all of these tasks.)

Something like this would probably be more effective:

I find all of these tasks an interesting challenge.

@Micawer:
Why not "All these tasks are attractive to me".
Why is 'of' required before 'these'

Atmanand MurthyWhy not "All these tasks are attractive to me".

I offered that as a direct fix for your original sentence, but it is not a very businesslike response.

Atmanand MurthyWhy is 'of' required before 'these'

For formality's sake.